468 Eevieics — Memoirs of the Geological Survey. 



This is a continuation of the series of county meraoirs on water 

 supply, of which those relating to Sussex and Berkshire have been 

 published. 



Eecords of all known borings and sinkings in Lincolnshire are 

 given, together with numerous analyses of water. In the introduction 

 there is a general account of the geological formations, especially in 

 reference to the water-bearing strata, and a separate article on 

 rainfall, accompanied by a map by Dr. H. R. Mill. 



II. Wales.— The Geology of the South Wales Coalfield. Part VI : 



The Country around Bridgend. By Aubrey Strahan, F.R.S., 

 and T. C. Cantrill, F.G.S., with parts by H. B. Woodward, 

 F.E.S., and E. H. Tiddeman, M.A. pp. 120. (1904. Price 

 Is. 6d.) 



This is an explanation of Sheets 261 and 262 of the Geological 

 Survey Map (colour-printed), and deals with a bordering portion of 

 the main coalfield of South Wales. The area is largely occupied by 

 the Lower Lias, the Ehjetic beds, and the Keuper Marls and Con- 

 glomerate — the last-named familiarly known as the Dolomitic 

 Conglomerate. It includes "the interesting tracts of littoral Lias at 

 Sutton and Southerndown ; also Aberthaw, famed for its lime and 

 cement. A small area of Coal-measures and Millstone Grit and 

 larger areas of Carboniferous Limestone and Old Eed Sandstone are 

 described. The hsematite of Llanharry and the Glacial and post- 

 Glacial deposits are duly noticed. 



III. Scotland. — The Geology of West Central Skye, with Soay. 

 By C. T. Clough, M.A., and Alfred Harker, F.E.S. pp. 59. 

 (1904. Price Is.) 



This Memoir, descriptive of Sheet 70 of the Geological Map of 

 Scotland, gives a brief account of the Tertiary igneous rocks of the 

 Cuillins, and of the basalt plateaux lying to the north and west of 

 that mountain group. The Torridonian rocks and the Tertiary 

 intrusions occurring in the island of Soay are described. The 

 patches of Triassic, Jurassic, and Cretaceous rocks found on the 

 cliffs on the north side of the Sound of Soay are referred to. Special 

 chapters are devoted to the Glacial and post-Glacial accumulations 

 and to the physical features and scenery. 



The Geology of the Country around Blair Atholl, Pitlochry, and 

 Aberfeldy. By G. Barrow, F.G.S., J. S. Grant Wilson, and 

 E. H. Cunningham Craig, B.A., with petrological notes by 

 J. S. Flett, D.Sc. pp. 161. (1905. Price 3s.) 



This is an explanation of Sheet 55 of the Geological Map of 

 Scotland, the area being entirely within the Highland district of 

 Perthshire. It is one of the most picturesque of the mountain 

 regions, made up mainly of various schists, with the limestones of 

 Loch Tay and Blair Atholl, some grits and quartzites, and the so- 

 called ' Green Beds,' a term not very happily applied to " a series 

 of sedimentary schists, sometimes pebbly, and usually containing 



